CN109695823A - A kind of pressure test device and method of slurries line clogging early warning - Google Patents
A kind of pressure test device and method of slurries line clogging early warning Download PDFInfo
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- CN109695823A CN109695823A CN201910149892.4A CN201910149892A CN109695823A CN 109695823 A CN109695823 A CN 109695823A CN 201910149892 A CN201910149892 A CN 201910149892A CN 109695823 A CN109695823 A CN 109695823A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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Abstract
The present invention relates to the pressure test devices and method of a kind of slurries line clogging early warning comprising pressure probe group, radial differential pressure pickup, axial pressure difference sensor, control system, pump and remote monitoring system；Pressure probe group includes first~third pressure probe, first, second pressure probe is separately positioned on the top and bottom that slurries pipeline front end is in same radial line, and third pressure probe is arranged in first pressure probe at the top of the slurries rear end of pipeline of same axis；Radial differential pressure pickup is connected with the first, second pressure probe, for obtaining the radial pressure difference signal of slurries pipeline front end；Axial pressure difference sensor is connected with first, third pressure probe, for obtaining the axial pressure difference signal of slurries pipeline rear and front end；Control system judges line clogging situation and slurries flow pattern according to radial and axial pressure difference signal, and sends command adapted thereto to pump and remote monitoring system according to judging result.The present invention can be widely applied to pipe detection field.
Description
Technical field
The present invention relates to the pressure test devices and method of a kind of slurries line clogging early warning, belong to fluid flowing safety neck
Domain.
Background technique
Slurries conveying pipe can be deposited in transport process due to solid so as to cause blocking, bring economic loss to production
With security risk.Currently, related detecting method pays close attention to the quick detection positioning after blocking occurs mostly, however it is clear after blocking generation
Stifled there is still a need for slurries conveyance conduits to stop working, and still can generate certain economic loss.Therefore, in order to reduce to the maximum extent
How the loss and harm that line clogging generates are analyzed before blocking occurs by pressure signal correlated characteristic, thus to blocking
Occur to carry out early warning and take appropriate measures that the safety and steady of pipeline transportation is kept to have become current oil and gas transportation pipeline
The task of top priority.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of pressure test device of slurries line clogging early warning and sides
Method by carrying out real-time pressure differential detection in slurries conveying pipe both ends top pressure point, and is believed according to the pressure difference at the top of both ends
Number judge whether pipeline blocks, according to flow pattern is flowed in the pressure difference signal judgement pipe at the top and bottom of pipeline one end, to carry out
The quick early warning of line clogging and differentiation.
To achieve the above object, the present invention takes following technical scheme:
The first aspect of the invention is to provide a kind of pressure test device of slurries line clogging early warning comprising pressure
Power probe group, radial differential pressure pickup, axial pressure difference sensor, control system, pump and remote monitoring system；The pressure probe
Group includes first~third pressure probe, and the front top of slurries pipeline, second pressure is arranged in the first pressure probe
Power, which is popped one's head in, is arranged in the front bottom end of the slurries pipeline, and is in same radial line, the third with first pressure probe
Pressure probe is arranged at the top of the rear end of the slurries pipeline, and is in same axis with first pressure probe；The diameter
It is connected respectively with first, second pressure probe to the both ends of differential pressure pickup, for obtaining the radial direction of slurries pipeline front end
Pressure difference signal is simultaneously sent to the control system；The both ends of the axial pressure difference sensor respectively with the first pressure probe and
Third pressure probe is connected, for obtaining the axial pressure difference signal of slurries pipeline rear and front end and being sent to the control system
System；The control system is according to obtained radial and axial pressure difference signal to the flow pattern of slurries in line clogging situation and pipeline
Judged, and command adapted thereto is sent to pump according to judging result, sends pre-warning signal when a jam does occur to the long-range prison
Control system.
Further, the control system includes A/D conversion module, axial pressure difference setting module, radial pressure differential resetting mould
Block and control system interlocking modules；The A/D conversion module is used for the axial pressure difference sensor and radial differential pressure pickup
The simulation pressure difference signal of acquisition is converted to digital signal, and carries out noise reduction process；The axial pressure difference setting module is used for basis
The variation characteristic of pressure difference when on-way resistance and blocking occur in managing sets axial threshold pressure differential and is sent to the control system connection
Lock module；It is described radial direction pressure differential resetting module be used for precipitated according to solid caused by characteristic from bore to static pressure distribution unevenness,
It sets radial threshold pressure differential and is sent to the control system interlocking modules；The control system interlocking modules are used for according to setting
Radial threshold pressure differential and axial pressure difference threshold value and the obtained radial pressure difference of monitoring and axial pressure difference to line clogging situation and
The flow pattern of slurries is judged in pipeline, and is sent according to judging result and to be shut down or adjustment instruction is to the pump, when blocking
When to the remote monitoring system send blocking pre-warning signal.
Another aspect of the present invention is to provide a kind of pressure differential detection method of slurries line clogging early warning comprising with
Lower step: 1) in the bottom of the top of slurries pipe ends and front end a pressure measurement point is at least respectively set, and by each pressure
Probe is connected with corresponding radial and axial differential pressure pickup, carries out pressure difference measurement；2) radial and axial differential pressure pickup will be surveyed
The pressure difference signal measured is sent to control system, control system according to the pressure difference signal received to line clogging situation and
The flow pattern of slurries is judged in pipeline, and takes corresponding measure.
Further, in the step 2), control system judges whether to block according to the pressure difference signal received, and
The method for taking corresponding measure, comprising the following steps:
2.1) the simulation pressure difference signal that radial differential pressure pickup and axial pressure difference sensor acquire is converted into digital signal,
And carry out noise reduction process；
2.2) variation characteristic of pressure difference when being occurred by on-way resistance in computer tube and blocking, sets axial threshold pressure differential；
2.3) bore caused by being precipitated according to solid sets radial threshold pressure differential to the characteristic of static pressure distribution unevenness；
2.4) the radial and axial pressure difference signal and step 2.2) that are obtained according to step 2.1) and the radial direction 2.3) set
Judge with flow pattern of the axial pressure difference threshold value to slurries in line clogging situation and pipeline, and phase is sent according to judging result
It answers control instruction to pump, sends pre-warning signal to remote monitoring system.
Further, in the step 2.2), the variation of pressure difference is special when being occurred by on-way resistance in computer tube and blocking
Property, the method for the axial threshold pressure differential of setting are as follows:
When calculating slurries pipeline normal work first, normal work pressure difference is calculated according to on-way resistance are as follows:
In formula, PABnormalBoth ends pressure difference, unit Pa when being worked normally for slurries pipeline；L is duct length, and unit is
m；D is pipe diameter, unit m；F is fanning friction factor；ρ is serum density, unit kg/m3；U is slurries mean flow
Speed, unit m/s；
Then, according to pipeline and slurry characteristics and the normal work pressure difference being calculated, axial pressure difference threshold value is determined.
Further, in the step 2.3), characteristic from bore caused by being precipitated according to solid to static pressure distribution unevenness,
The method for setting radial threshold pressure differential are as follows:
It calculates first when slurries are in suspension, the radial pressure difference in pipeline:
PACnoramal=ρ gD,
In formula, PACnoramalRadial pressure difference when suspension, unit Pa are in for slurries in pipeline；ρ is slurries
Density, unit kg/m3；G is acceleration of gravity, and unit is kg/ (ms)；D is pipe diameter, unit m；
Then according to slurries pipeline and slurry characteristics and the radial pressure difference being calculated, radial direction threshold pressure differential is determined.
Further, in the step 2.4), the radial and axial pressure difference signal and step that are obtained according to step 2.1)
2.2) judgment of clogging is carried out with the radial and axial threshold pressure differential of 2.3) setting, and corresponding control instruction is sent according to judging result
To pump, the method for transmission pre-warning signal to remote monitoring system are as follows:
Axial pressure difference is compared with the axial pressure difference threshold value of setting:
When axial pressure difference is more than axial pressure difference threshold value, control system confirms blockage phenomenon and immediately in slurries pipeline
Halt instruction is sent to pump, while sending jam signal to remote monitoring system；
When axial pressure difference is in axial pressure difference threshold value, radial pressure difference is compared with radial threshold pressure differential, if radial
Pressure difference is more than radial threshold pressure differential, then occurs fixed precipitating in control system confirmation slurries pipeline and be easy blocking and send to pump to adjust
Whole instruction, while easily blocking pre-warning signal is sent to remote monitoring system.
The invention adopts the above technical scheme, which has the following advantages: 1, the present invention slurries pipeline front end and
Three pressure detecting points are arranged in rear end, respectively the axial pressure difference signal of the radial pressure difference signal to slurries pipeline front end and front and back end
It is measured in real time, and early warning is carried out to line clogging according to testing result, can accurately judge to detect and whether be sent out in pipeline
Raw blocking issues jam signal to long-range monitoring when pipeline is in blocked state, shortens the stop production to overhaul time.2, of the invention
It is detected, the flow regime before line clogging can be carried out by the axial pressure difference signal to slurries pipeline front and back end
Identification issues blocking pre-warning signal to long-range monitoring when pipeline is in easy blocked state, reduces the probability that blocking occurs, greatly
Amount, which is reduced, blocks caused economic loss and safety hazard.Therefore, the present invention can be widely applied to fluid flowing safety detection
Field.
Detailed description of the invention
Fig. 1 is the pressure test device schematic diagram of present slurry line clogging early warning；
Fig. 2 is the flow chart of present invention blocking differentiation and early warning；
Fig. 3 is axial pressure difference curve synoptic diagram when pipeline is completely plugged；
Fig. 4 is radial pressure difference schematic diagram when slurries are suspension in pipeline；
Fig. 5 is the radial pressure difference schematic diagram that slurries are stratified flow in pipeline；
It is respectively marked in figure as follows: 1, pressure probe；2, slurries pipeline；3, radial differential pressure pickup；4, axial pressure difference senses
Device；5, control system；6, it pumps；7, remote monitoring system；A, first pressure measurement point；B, second pressure measurement point；C, third pressure
Power measurement point.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of pressure test device of slurries line clogging early warning provided by the invention comprising pressure is visited
Head group 1, radial differential pressure pickup 3, axial pressure difference sensor 4, control system 5, pump 6 and remote monitoring system 7.Wherein, pressure
Probe group 1 includes first~third pressure probe 11~13, and the front end of existing slurries pipeline 2 is arranged in first pressure probe 11
The front bottom end of slurries pipeline 2 is arranged in top, second pressure probe 12, is in same radial line, third with first pressure probe
Pressure probe 13 is arranged at the top of the rear end of slurries pipeline 2, is in same axial direction with first pressure probe 11；Radial differential pressure pickup
3 both ends are connected with the first, second pressure probe 11,12 respectively, and the radial pressure difference for obtaining existing 2 front end of slurries pipeline is believed
Number and be sent to control system 5；The both ends of axial pressure difference sensor 4 respectively with first pressure probe 11 and third pressure probe 13
It is connected, for obtaining the axial pressure difference signal of existing 2 rear and front end of slurries pipeline and being sent to control system 5；Control system 5
Judge according to flow pattern of the obtained radial and axial pressure difference signal to slurries in line clogging situation and pipeline, and according to sentencing
Disconnected result sends command adapted thereto to pump 6, sends pre-warning signal to remote monitoring system 7.
Further, control system 5 includes A/D conversion module, axial pressure difference setting module, radial pressure differential resetting module and control
System interlock module processed；Wherein, A/D conversion module is used for the mould for acquiring radial differential pressure pickup 3 and axial pressure difference sensor 4
Quasi- pressure difference signal is converted to digital signal, and carries out noise reduction process；Axial pressure difference setting module is used for according to on-way resistance in pipe
The variation characteristic of pressure difference when occurring with blocking sets axial threshold pressure differential and is sent to control system interlocking modules；Radial pressure difference
It is concurrent to set radial threshold pressure differential to the characteristic of static pressure distribution unevenness for bore caused by setting module is used to be precipitated according to solid
It is sent to control system interlocking modules；Control system interlocking modules are used for radial threshold pressure differential and axial pressure difference threshold value according to setting
The radial pressure difference and axial pressure difference obtained with monitoring judges the flow pattern of slurries in line clogging situation and pipeline, and root
It is judged that result sends shutdown or adjustment instruction to pump 6, is sent when sending blocking to remote monitoring system 7 and block early warning letter
Number.
As shown in Fig. 2, the pressure test device based on above-mentioned slurries line clogging early warning, the present invention also provides a kind of slurries
The pressure differential detection method of line clogging early warning comprising following steps:
1) a pressure measurement point is at least respectively set at the top at 2 both ends of slurries pipeline and the bottom of front end, and by each pressure
Power probe is connected with corresponding radial differential pressure pickup 3 and axial pressure difference sensor 4, carries out pressure difference measurement.
The present invention is introduced for three pressure measurement points are arranged, but not limited to this.Wherein: first pressure measurement point
The top of pipeline front end is arranged in A, and the top of rear end of pipeline, third pressure measurement point C setting is arranged in second pressure measurement point B
Same radial direction is in the bottom of pipeline front end, and with first pressure measurement point A；First pressure measurement point A and second pressure are surveyed
Amount point B is respectively used to the pressure of the upper slurry of corresponding measurement point on monitoring pipeline, and third pressure measurement point C is for detecting slurries
The pressure of corresponding measurement point lower slurry on pipeline；First pressure measurement point A and second pressure measurement point B carries out pressure difference ratio
Compared with to monitor whether pipeline blocks；First pressure measurement point A is compared with the pressure of third pressure measurement point C carries out pressure difference, with inspection
Flow pattern is flowed in test tube.
2) the radial and axial pressure difference signal that radial differential pressure pickup 3 and axial pressure difference sensor 4 obtain measurement is sent
To control system 5, control system 5 judges whether pipeline blocks according to the radial and axial pressure difference signal received, and adopts
Take corresponding measure.
Wherein, control system 5 judges whether to block according to the pressure difference signal received, and takes the side of corresponding measure
Method, comprising the following steps:
2.1) pressure difference signal acquisition process: the mould that differential pressure pickup is acquired by the A/D conversion module in control system 5
Quasi- signal is converted to digital signal, and carries out noise reduction process；
2.2) axial pressure difference threshold value is set: the variation characteristic of pressure difference when being occurred by on-way resistance in computer tube and blocking,
Axial threshold pressure differential is set, setting value is the alarming value for the pressure difference that digital quantity is when blocking.
The present invention is when setting axial threshold pressure differential, when calculating slurries pipeline works normally first, according to on-way resistance meter
Calculation obtains working normally pressure difference are as follows:
In formula, PABnormalBoth ends pressure difference, unit Pa when being worked normally for slurries pipeline；L is duct length, and unit is
m；D is pipe diameter, unit m；F is fanning friction factor, value 1；ρ is serum density, unit kg/m3；U is slurries
Mean flow rate, unit m/s；
Then, according to pipeline and slurry characteristics and the normal work pressure difference being calculated, axial pressure difference threshold value is determined.It examines
Consider the influence of slurries pipeline flow pattern, axial pressure difference PAB is in certain working range, chooses one according to pipeline and slurry characteristics
A threshold value PABmax(such as PABmax=2PABnormal)。
2.3) radial threshold pressure differential setting: characteristic from bore caused by being precipitated according to solid to static pressure distribution unevenness, if
Sizing is to threshold pressure differential, the alarming value of pressure difference when setting value is digital quantity, that is, pipe entoplasm liquid precipitate.
The present invention is when setting radial threshold pressure differential, when being in suspended state due to the solid in pipeline in slurries,
Internal diameter of the pipeline to pressure difference be slurries radial direction head difference, when duct bottom appearance a certain amount of precipitating when, sediment upper layer
Slurries flowing is influenced by bottom sediment, and bore will be to will generate additional pressure-difference fluctuation, and precipitation capacity is different or heavy
The radial pressure difference that accumulation form does not generate simultaneously that forms sediment is different.Radial pressure difference when slurries are in suspension, in pipeline are as follows:
PACnoramal=ρ gD
In formula, PACnoramalRadial pressure difference when suspension, unit Pa are in for slurries in pipeline；ρ is slurries
Density, unit kg/m3；G is acceleration of gravity, and unit is kg/ (ms)；D is pipe diameter, unit m.
In view of influencing existing for pump conveying speed, the influence of turbulent flow and solid particle, radial pressure difference PAC is in certain work
Make in range, a threshold value PAC is chosen according to pipeline and slurry characteristicsmax.It is radial to press when a certain amount of precipitating occurs in duct bottom
Poor PAC increases and is more than the work radial direction threshold pressure differential PAC of settingmax, pressure difference signal is transmitted to control by radial differential pressure pickup
System judges that pipeline is in easy blocked state by pre-set programs, issues adjustment instruction to pump and issues to remote monitoring system
Easy blockage alarm.
2.4) control system interlocks: the radial and axial pressure difference signal and step 2.2) that are obtained according to step 2.1) and
2.3) the radial and axial threshold pressure differential set carries out judgment of clogging, and sends corresponding control instruction to pumping according to judging result,
Pre-warning signal is sent to remote monitoring system.
Specific jam judging method are as follows:
Axial pressure difference is compared with the axial pressure difference threshold value of setting:
When axial pressure difference is more than axial pressure difference threshold value, control system confirms blockage phenomenon and immediately in slurries pipeline
Halt instruction is sent to pump, while sending jam signal to remote monitoring system；
When axial pressure difference is in axial pressure difference threshold value, radial pressure difference is compared with radial threshold pressure differential, if radial
Pressure difference is more than radial threshold pressure differential, then occurs fixed precipitating in control system confirmation slurries pipeline and be easy blocking and send to pump to adjust
Whole instruction, while easily blocking pre-warning signal is sent to remote monitoring system.
Jam judging method of the present invention is described further below by specific embodiment.
Situation 1: as shown in figure 3, the generation of slurries pipeline is completely plugged: when pipeline blocks, blocking section upstream pressure is held
Height of continuing rising, blocking section downstream pressure persistently reduce, and pipe ends pressure difference PAB increases rapidly, and axial pressure difference sensor 4 measures pressure difference
PAB is passed to control system 5, and control system 5 judges PAB > PAB by pre-set control programsmax, to judge to block, immediately
Halt instruction is issued to pump 6 and issues blockage alarm to remote monitoring system 7.
Situation 2: as shown in figure 4, slurries pipeline does not block, managing interior flow pattern is suspension: at this point, pipe ends pressure difference
There are certain fluctuation range, and PAB < PABmax, pipeline radial direction pressure difference PAC is radial head pressure, and PAC < PACmax, axial to press
The PAB of measurement is passed to control system 5 by gap sensor 4, and control system 5 judges that pipeline does not block up by pre-set control programs
Plug, radial differential pressure pickup 3 measure pressure difference PAC and are passed to control system 5, and control system 5 judges pipeline by pre-set control programs
Interior slurries are in suspension, and pipeline operates normally.
Situation 3: as shown in figure 5, slurries pipeline does not block, managing interior flow pattern is stratified flow: pipe ends exist certain
Fluctuation range, and PAB < PABmax, radially there is certain pressure difference PAC, and PAC > PAC in pipelinemax, axial pressure difference sensor 4 will survey
Fixed PAB is passed to control system, and control system 5 judges that pipeline does not block by pre-set control programs, radial pressure difference sensing
Device 3 measures pressure difference PAC and is passed to control system, and control system 5 judges that slurries are in stratified flow in pipeline by pre-set control programs
State, and adjustment instruction (as increased pump speed) is issued to pump 6, and issue easy blockage alarm to remote monitoring system 7.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied, all equivalents and improvement carried out based on the technical solution of the present invention should not exclude
Except protection scope of the present invention.
Claims (7)
1. a kind of pressure test device of slurries line clogging early warning, it is characterised in that: it includes pressure probe group, radial pressure difference
Sensor, axial pressure difference sensor, control system, pump and remote monitoring system；
The pressure probe group includes first~third pressure probe, and the front end of slurries pipeline is arranged in the first pressure probe
The front bottom end of the slurries pipeline is arranged in top, the second pressure probe, and with first pressure probe in same
One radial line, the third pressure probe are arranged at the top of the rear end of the slurries pipeline, and are in first pressure probe
Same axis；
The both ends of the radial direction differential pressure pickup are connected with first, second pressure probe respectively, for obtaining slurries pipeline
The radial pressure difference signal of front end is simultaneously sent to the control system；
The both ends of the axial pressure difference sensor are connected with first pressure probe and third pressure probe respectively, for obtaining
The axial pressure difference signal of slurries pipeline rear and front end is simultaneously sent to the control system；
The control system is according to obtained radial and axial pressure difference signal to the stream of slurries in line clogging situation and pipeline
Type judged, and sends command adapted thereto to pump according to judging result, send when a jam does occur pre-warning signal to it is described remotely
Monitoring system.
2. a kind of pressure test device of slurries line clogging early warning as described in claim 1, it is characterised in that: the control
System includes A/D conversion module, axial pressure difference setting module, radial pressure differential resetting module and control system interlocking modules；
The A/D conversion module is used for the simulation pressure difference signal of the axial pressure difference sensor and radial differential pressure pickup acquisition
Digital signal is converted to, and carries out noise reduction process；
The variation characteristic of pressure difference, setting shaft when the axial pressure difference setting module is used to be occurred according to on-way resistance in pipe and blocking
To threshold pressure differential and it is sent to the control system interlocking modules；
Characteristic of the bore to static pressure distribution unevenness, setting caused by the radial direction pressure differential resetting module is used to be precipitated according to solid
Radial threshold pressure differential is simultaneously sent to the control system interlocking modules；
What the control system interlocking modules were used to be obtained according to the radial threshold pressure differential and axial pressure difference threshold value and monitoring of setting
Radial pressure difference and axial pressure difference judge the flow pattern of slurries in line clogging situation and pipeline, and are sent out according to judging result
It send shutdown or adjustment instruction to the pump, sends blocking pre-warning signal to the remote monitoring system when a jam does occur.
3. a kind of pressure differential detection method using such as the slurries line clogging early warning of described device of any one of claims 1 or 2,
Be characterized in that the following steps are included:
1) a pressure measurement point is at least respectively set in the bottom of the top of slurries pipe ends and front end, and by each pressure probe
It is connected with corresponding radial and axial differential pressure pickup, carries out pressure difference measurement；
2) pressure difference signal that measurement obtains is sent control system by radial and axial differential pressure pickup, and control system is according to reception
To pressure difference signal the flow pattern of slurries in line clogging situation and pipeline is judged, and take corresponding measure.
4. a kind of pressure differential detection method of slurries line clogging early warning as claimed in claim 3, it is characterised in that: the step
2) in, control system judges whether to block according to the pressure difference signal received, and the method for taking corresponding measure, including with
Lower step:
2.1) the simulation pressure difference signal that radial differential pressure pickup and axial pressure difference sensor acquire is converted into digital signal, gone forward side by side
Row noise reduction process；
2.2) variation characteristic of pressure difference when being occurred by on-way resistance in computer tube and blocking, sets axial threshold pressure differential；
2.3) bore caused by being precipitated according to solid sets radial threshold pressure differential to the characteristic of static pressure distribution unevenness；
2.4) the radial and axial pressure difference signal and step 2.2) that are obtained according to step 2.1) and the radial direction and axis that 2.3) set
Judge to flow pattern of the threshold pressure differential to slurries in line clogging situation and pipeline, and corresponding control is sent according to judging result
System instruction sends pre-warning signal to remote monitoring system to pump.
5. a kind of pressure differential detection method of slurries line clogging early warning as claimed in claim 4, it is characterised in that: the step
2.2) in, the variation characteristic of pressure difference when being occurred by on-way resistance in computer tube and blocking, the method for setting axial threshold pressure differential
Are as follows:
When calculating slurries pipeline normal work first, normal work pressure difference is calculated according to on-way resistance are as follows:
In formula, PABnormalBoth ends pressure difference, unit Pa when being worked normally for slurries pipeline；L is duct length, unit m；D is
Pipe diameter, unit m；F is fanning friction factor；ρ is serum density, unit kg/m3；U is slurries mean flow rate, unit
For m/s；
Then, according to pipeline and slurry characteristics and the normal work pressure difference being calculated, axial pressure difference threshold value is determined.
6. a kind of pressure differential detection method of slurries line clogging early warning as claimed in claim 4, it is characterised in that: the step
2.3) in, bore caused by being precipitated according to solid is to the characteristic of static pressure distribution unevenness, the method for setting radial threshold pressure differential are as follows:
It calculates first when slurries are in suspension, the radial pressure difference in pipeline:
PACnoramal=ρ gD,
In formula, PACnoramalRadial pressure difference when suspension, unit Pa are in for slurries in pipeline；ρ is serum density,
Unit is kg/m3；G is acceleration of gravity, and unit is kg/ (ms)；D is pipe diameter, unit m；
Then according to slurries pipeline and slurry characteristics and the radial pressure difference being calculated, radial direction threshold pressure differential is determined.
7. a kind of pressure differential detection method of slurries line clogging early warning as claimed in claim 4, it is characterised in that: the step
2.4) in, the radial and axial pressure difference signal and step 2.2) that are obtained according to step 2.1) and 2.3) setting it is radial and axial
Threshold pressure differential carries out judgment of clogging, and sends corresponding control instruction to pump according to judging result, sends pre-warning signal to long-range prison
The method of control system are as follows:
Axial pressure difference is compared with the axial pressure difference threshold value of setting:
When axial pressure difference be more than axial pressure difference threshold value when, control system confirm slurries pipeline in blockage phenomenon and immediately to pump
Halt instruction is sent, while sending jam signal to remote monitoring system；
When axial pressure difference is in axial pressure difference threshold value, radial pressure difference is compared with radial threshold pressure differential, if radial pressure difference
More than radial threshold pressure differential, then occurs fixed precipitate in control system confirmation slurries pipeline and be easy blocking and send to adjust to pump to refer to
It enables, while sending easily blocking pre-warning signal to remote monitoring system.
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| CN115671861A (en) * | 2022-10-14 | 2023-02-03 | 长江三峡通航管理局 | Inlet valve box filter monitoring device and determination method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655213Y (en) * | 2003-08-04 | 2004-11-10 | 伍华本 | Pressure differential sensing system for detecting blocking state of filter |
| CN103644457A (en) * | 2013-12-13 | 2014-03-19 | 东北石油大学 | Pipeline blockage positioning method and device |
| CN104235619A (en) * | 2014-08-14 | 2014-12-24 | 重庆大学 | Fluid pipeline leakage state identification method |
| CN204649244U (en) * | 2015-06-12 | 2015-09-16 | 西安邮电大学 | A kind of oil pipeline oil quality on-line monitoring system |
| CN104989958A (en) * | 2015-07-30 | 2015-10-21 | 云南大红山管道有限公司 | Positioning method for blocking position of ore slurry conveying pipeline |
| CN204962307U (en) * | 2015-07-23 | 2016-01-13 | 昆明理工大学 | Early warning of ore pulp pipe blockage and positioner |
-
2019
- 2019-02-28 CN CN201910149892.4A patent/CN109695823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655213Y (en) * | 2003-08-04 | 2004-11-10 | 伍华本 | Pressure differential sensing system for detecting blocking state of filter |
| CN103644457A (en) * | 2013-12-13 | 2014-03-19 | 东北石油大学 | Pipeline blockage positioning method and device |
| CN104235619A (en) * | 2014-08-14 | 2014-12-24 | 重庆大学 | Fluid pipeline leakage state identification method |
| CN204649244U (en) * | 2015-06-12 | 2015-09-16 | 西安邮电大学 | A kind of oil pipeline oil quality on-line monitoring system |
| CN204962307U (en) * | 2015-07-23 | 2016-01-13 | 昆明理工大学 | Early warning of ore pulp pipe blockage and positioner |
| CN104989958A (en) * | 2015-07-30 | 2015-10-21 | 云南大红山管道有限公司 | Positioning method for blocking position of ore slurry conveying pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115671861A (en) * | 2022-10-14 | 2023-02-03 | 长江三峡通航管理局 | Inlet valve box filter monitoring device and determination method |
| CN115671861B (en) * | 2022-10-14 | 2023-05-02 | 长江三峡通航管理局 | Water inlet valve box filter monitoring device and measuring method |
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